Hello Mike,
First off, many thanks for your reply as i think that diagram will help a lot!
i should add the switch isn’t a Dimarzio switch, I just found that EMG use the same wire colour coding as Dimarzio, the switches are the standard DPDT ON-ON-ON 3 way mini toggles and judging by your 2nd diagram, they’re type 2 as the top left lug is left unused. Both switches were from the same retailer bought in the same transaction so can’t see them being different types to one another (I hope!)
I’ve noticed some slight differences in the way the diagram from Dimarzio and the diagram from Bartolini is wired up so I’ll try swapping the coloured wires first.
I think you’re right about the single coil hum cancelling thing too, I reckon that’s where I’ve balls’d it up. I’m going to pull the bass apart again tonight or tomorrow and have a go at it with the diagram you’ve provided. Whatever way the bridge pickup is wired up, I’ll go with the opposite diagram for the neck pickup.
There was nothing on the EMG page to suggest they were RW/RP but it would make total sense that they are. Tbh, the EMG pages are extremely unhelpful anyway.
Thanks again for your reply.